Outright price is $576. The larger Galaxy S4 Dual Mode LTE available in September, available outright for RRP $744, or $7 handset fee on Optus $60 plan, from mid-September.

"Being first-to-market with world leading devices that are supported by a premium TDD-LTE network represents a milestone for mobile technology in Australia and is indicative of the constantly evolving collaboration Samsung maintains with leaders in telecommunications networks," said Tyler McGee, VP - Telecommunications, Samsung.

"With the launch of the TDD-LTE capable GALAXY S4 mini and GALAXY S4 variants in Australia, Samsung is offering consumers greater choice when selecting a smartphone that suits their unique requirements."